CN107120797B - Frequency conversion control system and frequency conversion control method for precise air conditioner fan - Google Patents
Frequency conversion control system and frequency conversion control method for precise air conditioner fan Download PDFInfo
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- CN107120797B CN107120797B CN201710348955.XA CN201710348955A CN107120797B CN 107120797 B CN107120797 B CN 107120797B CN 201710348955 A CN201710348955 A CN 201710348955A CN 107120797 B CN107120797 B CN 107120797B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Abstract
The invention relates to a frequency conversion control system of a precise air conditioner fan, which comprises an air conditioner body and a frequency converter, wherein keys are arranged on the frequency converter. Compared with the prior art, the technical scheme of the invention has the beneficial effects that: the fan frequency converter is special for the precise air conditioner, does not need system control, reduces the dependence degree with an air conditioner controller, can reduce the research and development cost of air conditioner manufacturers, and improves the flexibility of controller and frequency converter type selection.
Description
Technical Field
The invention relates to an air conditioner control system, in particular to a frequency conversion control system and a frequency conversion control method for a precise air conditioner fan.
Background
The accurate air conditioner still need adjust system pressure through the amount of wind of adjusting outdoor condensing fan when controlling the compressor to reach constant temperature and humidity control's purpose, when adjusting the fan amount of wind, the regulation basis is pressure or evaporating temperature or the condensing temperature value of reference system, needs to improve the fan rotational speed when system pressure is too high, needs to reduce the fan rotational speed when system pressure is too low.
At present, most frequency converters for precise air-conditioning use a universal frequency converter, speed regulation control is carried out through an interface of the universal frequency converter according to a control mode of the universal frequency converter, functions of parameter setting, storage and parameter switching in winter and summer are not provided, and when the frequency converter is used, an upper computer or engineering personnel is required to carry out parameter adjustment, so that the flexibility is poor.
Disclosure of Invention
The invention provides a frequency conversion control system of a precise air conditioner fan, which aims to overcome at least one defect (deficiency) in the prior art.
In order to solve the technical problems, an object of the present invention is to provide a frequency conversion control system for a fan of a precision air conditioner, including an air conditioner body, which is characterized in that: the device also comprises a frequency converter, wherein keys are arranged on the frequency converter.
Furthermore, the frequency converter is provided with a nixie tube display.
Further, an interface is arranged on the frequency converter.
Furthermore, the interfaces are IO ports and communication ports.
Furthermore, the frequency conversion control system of the precise air conditioner fan is provided with a power-off memory module.
The invention further provides a frequency conversion control method of the precise air conditioner fan, which comprises the following steps of:
s1, setting parameters of a frequency converter;
s2, after the frequency converter is electrified, the current pressure or temperature and the parameter state are automatically detected, and corresponding setting parameters are selected according to the parameter state.
Further, the step S1 sets parameters of the frequency converter, the frequency converter is provided with a parameter setting function and an interface, the parameters comprise system pressure and temperature, and the interface comprises an IO port and a communication port.
Further, the parameters at least include two sets of set parameters, such as: the parameters may include both winter and summer set-up parameters.
Further, after the step S2 of powering up the frequency converter, the current pressure or temperature and the parameter state are automatically detected, and corresponding setting parameters are selected according to the parameter state; after the frequency converter is electrified, the current pressure or temperature and the parameter state are automatically detected, corresponding set parameters are selected according to the parameter state, the current pressure/temperature and the set pressure/temperature are compared, and the rotating speed is controlled according to the difference value.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the fan frequency converter is special for the precise air conditioner, does not need system control, reduces the dependence degree with an air conditioner controller, can reduce the research and development cost of air conditioner manufacturers, and improves the flexibility of controller and frequency converter type selection.
Drawings
Figure 1 is a fan control logic diagram of one embodiment of a variable frequency control system for a precision air conditioner fan of the present invention,
FIG. 2 is a software control flow chart of an embodiment of a variable frequency control system for a fan of a precision air conditioner in the invention.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, so to speak, the two elements are communicated internally. It will be understood by those of ordinary skill in the art that the terms described above are in the specific sense of the present invention. The technical scheme of the invention is further described below with reference to the accompanying drawings and examples.
As shown in fig. 1-2, an objective of the present invention is to provide a frequency conversion control system for a precision air conditioner fan, which includes an air conditioner body, and further includes a frequency converter, wherein a key is disposed on the frequency converter.
As an improvement of a specific embodiment, the frequency converter is provided with a nixie tube display.
As an improvement of the specific embodiment, the frequency converter is provided with an interface.
As an improvement of a specific embodiment, the interface is an IO port or a communication port.
As an improvement of a specific embodiment, the frequency conversion control system of the precise air conditioner fan is provided with a power-off memory module.
The invention further provides a frequency conversion control method of the precise air conditioner fan, which comprises the following steps of:
s1, setting parameters of a frequency converter;
s2, after the frequency converter is electrified, the current pressure or temperature and the parameter state are automatically detected, and corresponding setting parameters are selected according to the parameter state.
As an improvement of the specific embodiment, the step S1 sets parameters of the frequency converter, the frequency converter is provided with a parameter setting function and an interface, the parameters comprise system pressure and temperature, and the interface comprises an IO port and a communication port.
As an improvement of the specific embodiment, the parameters at least comprise two sets of set parameters, such as: the parameters may include both winter and summer set-up parameters.
As an improvement of a specific embodiment, after the step S2 of powering up the frequency converter, the current pressure or temperature and the parameter state are automatically detected, and corresponding setting parameters are selected according to the parameter state; after the frequency converter is electrified, the current pressure or temperature and the parameter state are automatically detected, corresponding set parameters are selected according to the parameter state, the current pressure/temperature and the set pressure/temperature are compared, and the rotating speed is controlled according to the difference value.
The air conditioner is characterized in that the air quantity of the outdoor condensing fan is regulated to regulate the system pressure while controlling the compressor so as to achieve the purpose of constant temperature and constant humidity control, when the air quantity of the fan is regulated, the regulation basis is that the pressure or the evaporating temperature or the condensing temperature value of a reference system, when the system pressure is too high, the fan rotating speed is required to be increased, and when the system pressure is too low, the fan rotating speed is required to be reduced, so that a pressure comparison value is required to be set during system control, or a temperature comparison value of the pressure is required to be indirectly reacted, and in order to improve the constant temperature and constant humidity control performance of the air conditioner, the value cannot be set to the same value when the environmental temperature difference is large (such as winter and summer), and the value must be respectively set. As a precision air conditioner fan frequency converter, if the value can be written into the frequency converter, the frequency converter can independently control the system pressure. Meanwhile, two sets of setting parameters (such as winter parameters and summer parameters) are separated, so that an air conditioner controller is not required to be set, the development workload of the air conditioner controller is reduced, and the universalization degree of the fan frequency converter is improved. The air conditioner controller can automatically control the rotating speed of the fan by only giving parameter selection signals (such as switch signals, communication instructions and the like).
The frequency converter of the invention is added with a parameter setting function and an interface, wherein the parameter comprises but is not limited to system pressure and temperature, and the interface comprises but is not limited to an IO port and a communication port. The specific technical scheme is as follows: the frequency converter is provided with keys and a nixie tube display, a user can enter a parameter setting interface through key setting, parameters including summer pressure P0-P4, winter pressure P0-P4, summer temperature T0-T4 and winter temperature T0-T4 can be set, and the frequency converter can be automatically stored after operation parameters are set through keys and has a power-off memory function.
After the frequency converter is electrified, the current pressure or temperature and the parameter state are automatically detected, corresponding set parameters are selected according to the parameter state, the current pressure (temperature) and the set pressure (temperature) are compared, and the rotating speed is controlled according to the difference value.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In fig. 1, the abscissa is a pressure value or a temperature value, and the ordinate is a frequency value. P0-P4 is a set pressure control comparison value, and T0-T4 is a set temperature comparison value for indirectly controlling the system pressure. F1 is the lowest operating frequency, F2 is the highest operating frequency, and the highest operating frequency is less than or equal to the nominal frequency. The curve in the figure shows the correspondence between the actual operating frequency and the pressure or temperature. The operation logic is as follows: when the current pressure (temperature) is detected to be greater than the set parameter P1 (T1), the fan is started, the running frequency is F1, when the current pressure (temperature) is detected to be greater than the set parameter P2 (T2), the fan runs at the maximum rotation speed F2, when the current pressure (temperature) is detected to be greater than the set parameter P4 (T4), the fan runs at the rated frequency, when the current pressure (temperature) is detected to be less than the set parameter P3 (T3), the fan is reduced to the maximum rotation speed F2, when the current pressure (temperature) is detected to be less than the set parameter P0 (T0), the fan stops running, and when the current pressure (temperature) is detected to be greater than P1 and less than P2, the rotation speed is adjusted linearly along with the change of the pressure (temperature).
Fig. 2 is a software control flow chart, where appropriate control parameters are selected through detection of the chip IO port or through an external communication signal, where the control parameters are one of two sets of parameters, and at least 5 parameters of each set can be set. When the parameter switching signal is detected, the fan is forced to operate for t minutes (t >0, settable) according to the rated frequency, and then the operation is stopped.
Compared with the prior art, the technical scheme of the invention has the beneficial effects that:
the fan frequency converter is special for the precise air conditioner, does not need system control, reduces the dependence degree with an air conditioner controller, can reduce the research and development cost of air conditioner manufacturers, and improves the flexibility of controller and frequency converter type selection.
In the drawings, the positional relationship is described for illustrative purposes only and is not to be construed as limiting the present patent; it is to be understood that the above examples of the present invention are provided by way of illustration only and not by way of limitation of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (3)
1. The utility model provides a precision air conditioner fan variable frequency control system, includes the air conditioner body, its characterized in that: the device also comprises a frequency converter, wherein keys are arranged on the frequency converter;
the frequency converter is provided with a nixie tube display;
an interface is arranged on the frequency converter;
the interface is an IO port and a communication port;
the frequency conversion control system of the precise air conditioner fan is provided with a power-off memory module;
the frequency converter is provided with a parameter setting function, and the parameters comprise system pressure and system temperature;
wherein, a plurality of sets of operation parameters are written in the frequency converter, and each set of operation parameters comprises a set parameter and a comparison value; setting the set parameters and the comparison values in the plurality of sets of operation parameters according to the environmental temperature difference;
each set of operation parameters at least comprises 5 comparison values, and the comparison values and the corresponding setting parameters in each set of operation parameters are different;
after the frequency converter is electrified, the current pressure or temperature and the parameter state are automatically detected, corresponding setting parameters are selected according to the parameter state, and the parameter state comprises summer setting parameters and winter setting parameters;
the 5 comparison values are 5 pressure comparison values or 5 temperature comparison values, and the 5 pressure comparison values or the 5 temperature comparison values in each set of operation parameters cannot be set to be the same value when the environmental temperature difference is large;
the 5 pressure comparison values are P0-P4, and the 5 temperature comparison values are T0-T4;
when the current pressure or the current temperature is detected to be larger than the pressure comparison value P1 or the temperature comparison value T1, the fan is started, and the running frequency is the lowest running frequency F1;
when the current pressure or the current temperature is detected to be larger than the pressure comparison value P2 or the temperature comparison value T2, the fan operates at the highest operating frequency F2;
when the current pressure or the current temperature is detected to be larger than the pressure comparison value P4 or the temperature comparison value T4, the fan operates at the rated frequency;
when the current pressure or the current temperature is detected to be smaller than the pressure comparison value P3 or the temperature comparison value T3, the fan is reduced to the highest operating frequency F2 to operate;
when the current pressure or the current temperature is detected to be smaller than the pressure comparison value P0 or the temperature comparison value T0, the fan stops running;
when the current pressure or the current temperature is detected to be larger than P1 or T1 and smaller than P2 or T2, the rotating speed is linearly regulated along with the pressure or temperature change;
the highest operating frequency F2 is smaller than or equal to the rated frequency.
2. A frequency conversion control method of a precise air conditioner fan comprises the following steps:
s1, setting parameters of a frequency converter;
s2, after the frequency converter is electrified, automatically detecting the current pressure or temperature and a parameter state, and selecting corresponding setting parameters according to the parameter state, wherein the parameter state comprises summer setting parameters and winter setting parameters;
wherein, when setting parameters of the frequency converter, the method comprises the following steps:
writing a plurality of sets of operation parameters into the frequency converter, wherein each set of operation parameters comprises a set parameter and a comparison value; setting the set parameters and the comparison values in the plurality of sets of operation parameters according to the environmental temperature difference;
each set of operation parameters at least comprises 5 comparison values, and the comparison values and the corresponding setting parameters in each set of operation parameters are different;
the 5 comparison values are 5 pressure comparison values or 5 temperature comparison values, and the 5 pressure comparison values or the 5 temperature comparison values in each set of operation parameters cannot be set to be the same value when the environmental temperature difference is large;
the 5 pressure comparison values are P0-P4, and the 5 temperature comparison values are T0-T4;
when the current pressure or the current temperature is detected to be larger than the pressure comparison value P1 or the temperature comparison value T1, the fan is started, and the running frequency is the lowest running frequency F1;
when the current pressure or the current temperature is detected to be larger than the pressure comparison value P2 or the temperature comparison value T2, the fan operates at the highest operating frequency F2;
when the current pressure or the current temperature is detected to be larger than the pressure comparison value P4 or the temperature comparison value T4, the fan operates at the rated frequency;
when the current pressure or the current temperature is detected to be smaller than the pressure comparison value P3 or the temperature comparison value T3, the fan is reduced to the highest operating frequency F2 to operate;
when the current pressure or the current temperature is detected to be smaller than the pressure comparison value P0 or the temperature comparison value T0, the fan stops running;
when the current pressure or the current temperature is detected to be larger than P1 or T1 and smaller than P2 or T2, the rotating speed is linearly regulated along with the pressure or temperature change;
the highest operating frequency F2 is smaller than or equal to the rated frequency.
3. The frequency conversion control method of the precise air conditioner fan according to claim 2, wherein the frequency conversion control method comprises the following steps: the step S2 further includes: comparing the current pressure/temperature with the set pressure/temperature, and performing rotational speed control according to the difference value.
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| CN201710348955.XA CN107120797B (en) | 2017-05-17 | 2017-05-17 | Frequency conversion control system and frequency conversion control method for precise air conditioner fan |
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| CN201710348955.XA CN107120797B (en) | 2017-05-17 | 2017-05-17 | Frequency conversion control system and frequency conversion control method for precise air conditioner fan |
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| CN107120797A CN107120797A (en) | 2017-09-01 |
| CN107120797B true CN107120797B (en) | 2023-10-17 |
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| CN113606757B (en) * | 2021-05-28 | 2023-01-20 | 维克（天津）有限公司 | Fan control method for full-direct-current variable-frequency air-cooling module machine |
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| CN2758628Y (en) * | 2004-10-28 | 2006-02-15 | 江苏新科电子集团空调器制造有限公司 | Circuit device for indoor unit of air conditioner and window air conditioner |
| CN1766447A (en) * | 2004-10-28 | 2006-05-03 | 江苏新科电子集团空调器制造有限公司 | Circuit device of indoor unit of air conditioner, circuit device of window type air conditioner, and method for starting air conditioner after sudden power-off |
| CN201318774Y (en) * | 2008-11-24 | 2009-09-30 | 郝光宗 | Energy-saving control device for water circulating pump of central air-conditioner |
| CN104295517A (en) * | 2014-08-08 | 2015-01-21 | 暨南大学 | Intelligent indoor temperature adjusting system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4990115B2 (en) * | 2007-12-06 | 2012-08-01 | 株式会社デンソー | Position range setting device, control method and control device for moving object mounting device, and control method and control device for vehicle air conditioner |
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- 2017-05-17 CN CN201710348955.XA patent/CN107120797B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4497242A (en) * | 1982-02-11 | 1985-02-05 | Barber-Colman Company | Ventilation control system |
| CN2533418Y (en) * | 2002-03-11 | 2003-01-29 | 广州市奥特控制工程有限公司 | Temp. controller |
| CN2758628Y (en) * | 2004-10-28 | 2006-02-15 | 江苏新科电子集团空调器制造有限公司 | Circuit device for indoor unit of air conditioner and window air conditioner |
| CN1766447A (en) * | 2004-10-28 | 2006-05-03 | 江苏新科电子集团空调器制造有限公司 | Circuit device of indoor unit of air conditioner, circuit device of window type air conditioner, and method for starting air conditioner after sudden power-off |
| CN201318774Y (en) * | 2008-11-24 | 2009-09-30 | 郝光宗 | Energy-saving control device for water circulating pump of central air-conditioner |
| CN104295517A (en) * | 2014-08-08 | 2015-01-21 | 暨南大学 | Intelligent indoor temperature adjusting system |
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Effective date of registration: 20180906 Address after: 519000 3 building, No. 13 building, Jinding Science and Technology Industrial Park, Jinfeng West Road, Tangjia Bay, Zhuhai, Guangdong, China. A Applicant after: ZHUHAI WELLGO INVERTER TECHNOLOGY Co.,Ltd. Address before: 519000 B305, 3rd floor, 8 Pingtung six road, Nanping Science and Technology Industrial Park, Zhuhai, Guangdong Applicant before: ZHUHAI SUYING TECHNOLOGY CO.,LTD. |
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